# Ema vs Writer: who uses which

On usedby, 7 companies use Ema and 74 use Writer. 2 companies use both, including KPMG and NTT Data. Counts include every proof level, job-post signals included. Companies named on both have a confirmed or observed line on each side. Latest check 2026-10-08: 73 of 81 public lines checked.

## Side by side

|  | [Ema](https://www.usedby.ai/tools/ema.md) | [Writer](https://www.usedby.ai/tools/writer.md) |
|---|---|---|
| Public customers | 7 | 74 |
| Confirmed | 3 | 63 |
| Observed | 4 | 11 |
| Signals (job posts) | 0 | 0 |
| Top industries of customers | Accounting & Audit (2), HR & Recruiting (2), IT Services & System Integration (2) | HealthTech & Digital Health (7), Marketing Tech (7), Fintech & Payments (5) |
| Category | Enterprise AI Platforms | Enterprise AI Platforms |
| Security | SOC 2 Type II, ISO 42001, ISO 27001, ISO 27701, ISO 27017, Cyber Essentials, PCI DSS, HIPAA, CSA STAR ([trust.ema.ai](https://trust.ema.ai/), checked 2026-10-08) | SOC 2 Type II, ISO 27001 ([writer.com](https://writer.com/trust/), checked 2026-10-03) |
| Data processing terms | A data processing agreement is available. ([ema.ai](https://www.ema.ai/dpa), checked 2026-10-08) | A data processing agreement is available. ([writer.com](https://writer.com/legal/data-processing/), checked 2026-10-03) |
| Free trial | Free trial or free plan available. ([ema.ai](https://www.ema.ai/hire-ema), checked 2026-10-08) | Free trial or free plan available. ([writer.com](https://writer.com/plans/), checked 2026-10-03) |
| Integrations | Clear Books, Dynamics 365 Finance, Freeagent, Freshbooks, Harvest, Microsoft Dynamics 365 Business Central, Moneybird, Netsuite, Oracle Financials Cloud, Quickbooks Online, Sage Business Cloud Accounting, Sage Intacct ([ema.ai](https://www.ema.ai/integrations), checked 2026-10-08) | Snowflake, Salesforce, Contentful, Adobe Experience Manager, Asana, Atlassian, Databricks, FactSet, Gong, Google BigQuery, Google Workspace, HubSpot ([writer.com](https://writer.com/product/connectors/), checked 2026-10-03) |
| Your data | — | Not used to train models by default. ([writer.com](https://writer.com/trust/), checked 2026-10-03) |

## Companies named on both

Confirmed or observed on each side. The first public proof is not an adoption date.

| Company | First public proof, Writer |
|---|---|
| [KPMG](https://www.usedby.ai/companies/kpmg.md) | On or before August 2025 |
| [NTT Data](https://www.usedby.ai/companies/ntt-data.md) | On or before November 2024 |

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Source: https://www.usedby.ai/compare/ema-vs-writer · How we check: https://www.usedby.ai/methodology